OBJECTIVE: To synthesis chitosan/β-glycerophosphate (CS/β-GP) thermosensitive hydrogel containing multi-walled carbon nanotubes-polyethyleneimine (MWCNTs-PEI) complexes and to lay a foundation for further research of dual slow-release delivery system. METHODS: Chitosan thermosensitive hydrogel containing MWCNTs-PEI was prepared by MWCNTs-PEI dispersed to the chitosan thermosensitive hydrogel. As the indicator of the gelling time, the experiment studied the effect of β-GP concentration, pH, temperature and MWCNTs-PEI composite quality on the thermosensitive chitosan hydrogel, and then it was charactered by using transmission electron microscopy (SEM), infrared spectrometer(IR), and initially investigated in vivo compatibility. RESULTS: The dynamic rheology method investigated the gelling temperature were about 37.0°C. Within a certain range, the gelling time of thermosensitive chitosan hydrogel was shortened with the increase of concentration of β-GP, pH, temperature, and the quality of MWCNTs-PEI complexes, and they could be transformed into the hydrogel in vivo. The addition of MWCNTs-PEI complex didn't react chemically with the thermosensitive chitosan hydrogel and significantly make the holes of the chitosan thermosensitive hydrogel smaller by SEM and FT-IR, eventually leading to the swelling rate and the corrosional ratio decrease. CONCLUSION: Chitosan/β-glycerophosphate thermosensitive hydrogel containing amino-carbon nanotubes has a rapid gelation and good temperature-sensitivity, which can serve as a good double sustained-release carrier.

OBJECTIVE: To synthesize water-soluble multi-walled carbon nanotubes-polyethyleneimine (MWCNTs-PEI) composite with low cytotoxicity and to lay a foundation for further research of loading drugs with carbon nanotubes. METHODS: MWCNTs-PEI composite was prepared by modifying carboxylated multi-walled carbon nanotubes(MWCNTs-COOH) with polyethylene (PEI), and then the composite was characterized by transmission electron microscopy, infrared spectra, UV spectra and thermalgravimetric analysis. The cytotoxicity of the composite on PC12 cells was measured by methyl thiazolyl tetrazolium(MTT) assay to preliminarily evaluate its biocompatibility. RESULTS: The dissolubilities of MWCNTs-PEI and MWCNTs-COOH complexes were respectively 1.009 and 0.0601 mg · mL-1, and the former was about 16 times of the latter. The cytotoxicity of MWCNTs-PEI composite on PC 12 cells was significantly milder than that of MWCNTs-COOH composite as indicated by MTT assay (P < 0.05). CONCLUSION: MWCNTs-PEI composite not only improves the dispersibility of carbon nanotubes, but also reduces its in vitro cell toxicity.

Existing reporting guidelines for systematic reviews/Meta-analysis (SRs/MAs) cannot meet the requirements of clinical practice and scientific research, so based on evidence, methods and thoughts on establishing reporting guidelines for TCM-featured acupuncture systematic reviews/Meta-analysis were proposed. Through literature analysis, according to evidence-based principle, preliminary ideas on methodology of establishing reporting guidelines for TCM-featured acupuncture systematic reviews /Meta-analysis were proposed. With consensus as one main research method, it was proposed that in the consensus that was selected and established by experts, the pro- portion of Chinese scholars should be increased to fully declare the opinions of Chinese acupuncturists, and by verification of practice and application, the reporting guidelines for TCM-featured acupuncture systematic reviews/Meta-analysis can be finally made.
Acupuncture Therapy ; methods ; standards ; Evidence-Based Medicine ; methods ; standards ; Humans ; Medicine, Chinese Traditional ; methods ; standards

Objective To study the risk factors of skin lesion (keratosis and abnormal skin pigmentation) of population exposed to arsenic via drinking water in Inner Mongolia.Methods A cluster sampling method was used to select 902 cases from Linhe district,Hanghou and Wuyuan county in Inner Mongolia and physical examination was done.They were interviewed for information by questionnaire.The sample of fingernails and drinking water were collected.Water arsenic (As) was analyzed by inductively coupled plasma mass spectrometry (ICPMS); fingernail As and Se content were analyzed by instrumental neutron activation analysis(INAA).Data were analyzed by univariate and multivariate non-conditional Logistic regression.Results Single factor analysis showed that risk factors of keratosis were age,pesticide,arsenic in nails,smoking,years of smoking,drinking of alcohol,arsenic content in drinking water,fluorosis and duration of drinking arsenic-containing water,while occupation,nail selenium content and vitamin were protective factors.There were 10 risk factors for pigment abnormalities,which were age,pesticide,arsenic in nails,smoking,years of smoking,numbers of cigarette smoked daily,drinking of alcohol,fluorosis,the arsenic content in drinking water and duration of drinking arseniccontaining water,while sex,occupation and nails with selenium were protective factors.The multivariate factor analysis showed that the risk factors of keratosis were age,pesticide and arsenic content in drinking water(OR =1.387,1.583,1.321,all P ＜ 0.05),while occupation and vitamin were protective factors(OR =0.307,0.260,all P ＜ 0.05).The risk factors of abnormal skin pigmentation were age,pesticide,arsenic in nails,fluorosis and arsenic content in drinking water(OR =1.724,2.636,2.741,3.699,1.863,all P ＜ 0.05),while sex was protective factor(OR =0.255,P ＜ 0.01 ).Conclusions Many factors have influence on endemic arsenism and a composite measure should be implemented to prevent it such as excluding arsenic from drinking water,health education,and a reasonably intake of nutrients.

Objective To study the influence of arsenic exposure on menstruation.Methods A cluster sampling method was applied to select the subjects of women aged 10 to 65 from Linhe,Hangjinhouqi and Wuyuan counties in Inner Mongolia in 2004.Drinking water samples were collected to detect arsenic levels,and menstrual related situation was surveyed.The subjects were divided into four groups according to drinking water arsenic concentration:control(≤0.01 mg/L),low(＞ 0.01-0.10 mg/L),moderate(＞ 0.10-0.20 mg/L) and high(＞ 0.20mag/L).Results A total of 602 women were surveyed.There were 83 subjects exposed to arsenic before menarche and their menarche age was (14.37 ± 1.54) years old.There were 90 people exposed to arsenic before menopause and the menopause age was (48.13-0.41) years old.The age of menarche and menopause were positively related to the years of arsenic exposure,and correlation coefficients were 0.268 and 0.278 (all P ＜ 0.05).Compared to control group(14.0％,16/112),menstrual abnormality rate decreased in low(12.1％,21/173) and high dose groups(10.2％,19/186),while increased in the moderate dose group(18.2％,16/88),but the differences were not statistically significant(x2 =3.664,P ＞ 0.05).Conclusions Long-term arsenic exposure delays the menarche and menopause age,suggesting that arsenic has certain endocrine disruption or estrogen-like effects.

ObjectiveTo introduction of perforator flaps,muscle flaps pedicled by descending branch of lateral circumflex femoral artery,method and their clinical application that multiple soft tissue defects of hand are repaire by muliplefoliated tissue flap only branch lateral circumflex femoral artery.MethodsFifteen patients with multiple soft tissue defects of hand were repaired muliplefoliated tissue flap only pedicled bydescending branch lateral circumflex femoral artery.At first,the anterolateral thigh perforator flap was designed and harvested according to the soft tissue defects of hand, then the descending branch lateral circumflex femoral artery was dissected at the same time the segmented perforator flap,fascia lata flap,rectus femoris muscle flap, vastus lateralis muscle flap, vastus intermedius muscle flap and distal spatium intermusculare flap were harvested in need according to distance among soft tissue defects.The muliplefoliated tissue flap was harvested only pedicled by descending branch lateral circumflex femoral artery, at last muscle flaps and fascia lata flaps were covered by skin graft, so the multiple soft tissue defects of hand were repaired in one time.ResultsNo vascular crisis happened. All skin grafts survived well, the contour of all repaired soft tissue defects was good and protective feeling was recovered by skin grafts of all flaps. All cases were got follow-up and the range was from 6 to 20 months(the average was 8.7 months).Wound of donor site healed well, muscle strength of quadriceps and motion of knee were normal. Three cases were excellent,nine cases were well and 3 cases were good, according to upper extremity function evaluation criteria of Chinese Medical Society for the Surgery of the Hand, the rate of good was 80 percent.ConclusionMultiple soft tissue defects of hand can be repaired by muliplefoliated flap only pedicled by descending branch of lateral circumflex femoral artery. Its advantages included reduction of operation time and treatment, good recovery of hand contour and function. It is a good method to repair multiple soft tissue defects of hand.

To produce specific monoclonal antibody (McAb) against human thrombomodulin (hTM), the full-length hTM cDNA-expressing plasmid pThr402 was transfected into CHO cells by Lipofectamine 2000 reagent. The hTM-expressing CHO cells, which was confirmed by flow cytometry and Western blot, were obtained by G418 selection. Then the McAb against hTM was prepared with classic hybridoma technique. A cell line of CHO-TM5 with high level of hTM was used to immunize female Balb/c mice 3 times at an interval of 4 weeks. On the third day after the third immunization, mice were sacrificed and spleen cells were harvested to prepare hybridoma cells with SP2/0 cells at the ratio of 10 to 1. Hybridoma cells were then cultured at 96-well plates for screening. Cellular enzyme-linked immunoabsorbent assay (CELISA) was applied twice. The first CELISA was done with polythene ELISA plate with a monolayer of CHO-TM5 cells. The positive clones from the first screen were then selected by reacting with similar screening ELISA plate but with CHO cell monolayer instead. Only clones that were positive for the first screening and negative for the second screening were kept, and called as CHO-TM5(+)CHO(-) hybridoma cells. Balb/c mice were intraperitoneally injected with the selected hybridoma cells. Ascites were collected and monoclonal antibodies were purified using FPLC, and its Ig class, subclass, and titer were then determined respectively. The specificity of the yielded McAb was identified with CELISA, flow cytometry, ABC immunohistochemistry and immunoblotting. One line of hybridoma cells with high expression of specific McAb against hTM, NH-1, was obtained. The Ig subclass of the McAb was IgG1 and the titer of ascitic McAb was 1x10(-6). Flow cytometry, CELISA and Western blot assays demonstrated that McAb NH-1 could specifically recognize hTM expressed in CHO-TM5 cells and human umbilical vascular endothelial cells. Meanwhile, the tissue specificity of antigen recognized by McAb NH-1 was identified by immunohistochemical ABC staining. NH-1 can specifically recognize the natural hTM expressed mainly in vascular endothelial cells, which will potentially be useful for investigation of the functions and clinic values of hTM.
Animals ; Antibodies, Monoclonal ; biosynthesis ; immunology ; Antibody Specificity ; CHO Cells ; Cricetulus ; Female ; Humans ; Hybridomas ; secretion ; Mice ; Mice, Inbred BALB C ; Thrombomodulin ; immunology ; Transfection

Adult ; Female ; Humans ; Middle Aged ; Myxoma ; pathology ; surgery ; Vulvar Neoplasms ; pathology ; surgery

BACKGROUNDInside out transobturator vaginal tape (TVT-O) and tension-free vaginal tape (TVT) are predominant surgical treatments for female stress urinary incontinence. This meta-analysis evaluated the complications and cure rates of TVT-O versus TVT.

METHODSA comprehensive literature search was conducted according to the Cochrane Collaboration methodology to identify randomized controlled clinical trials with no language restriction. Two authors independently assessed papers for eligibility and methodological quality. Estimates were measured by relative risk with 95% confidence intervals. Outcome measures were objective cure, subjective cure and complications. Quality rating for each outcome of the meta-analysis and recommendations were performed by the Grading of Recommendations Assessment, Development, and Evaluation (GRADE) system.

RESULTSTwenty randomized controlled trials met the inclusion criteria, and a pooled estimate of effectiveness and complications was made. Relative risks with 95% confidence intervals for pooled effects under the fixed effects model were: 0.20 (0.09 - 0.45), for bladder injury, 0.37 (0.16 - 0.86) for hematoma, and 2.35 (1.57 - 3.51) for postoperative pain, suggesting an 80% risk reduction of bladder injury, 63% risk reduction of hematoma, and a 1.35% risk elevation for postoperative pain with TVT-O. There was no significant difference between complications of urinary tract infection 1.14 (0.78 - 1.65), lower urinary tract symptoms 1.60 (0.67 - 3.79), recatheterization 0.93 (0.59 - 1.44), and tape erosion 0.90 (0.48 - 1.67), total objective cure rate 1.06 (0.39 - 2.84) and for the subjective cure rate 0.98 (0.93 - 1.04). The quality rating for each outcome and recommendations was high for objective cure, bladder injury, hematoma, lower urinary tract symptoms, and tape erosion and moderate for subjective cure, pain, and urinary tract infection.

CONCLUSIONSTVT-O is associated with a reduced risk of bladder injury and hematoma and an elevated risk of postoperative pain. Other complications, including tape erosion, urinary tract infection, lower urinary tract symptoms, and recatheterization, are similar to those of TVT.

Objective To investigate the cell morphology and expression of 5-hydroxytryptamine transporter(5-HTT) in hippocampal CA1 region of depression rats induced by adolescent and post-adult stress,and to observe the inter-vention effect of modified Sini San (MSS). Methods One hundred and thirty-two Wistar rats were randomly divided into blank group,model group,JSS group,and fluoxetine group,33 rats in each group. And then the rats in each group were randomly subdivided into adolescent group, adult group, post-adult group acaccording to the age day, 11 rats in each subgroup. Age day 44,56 and 78 were used as the sampling time points for adolescent group,adult group,post-adult group respectively. Chronic unpredictable mild stress(CUMS)rat model was used. From day 21 to 44 and from day 57 to 78, the rats were modeled and given medication, but from day 44 to 55, the rats were fed normally. The rat general condition and body mass of various groups were observed,the cell morphology of hippocampal CA1 region was observed by hematoxylin-eosin (HE) staining , and the distribution of 5-hydroxytryptamine transporter (5-HTT)positive cells in CA1 region of hippocampus was observed by immunohistochemical staining. Results The general condition of the rats at different age stages in the model group was poor,while that in MSS group and fluoxetine group was improved obviously. The body mass of rats at different age stages in the model group was obviously decreased (P<0.01 compared with the blank group). After adulthood stage,the body mass of rats in model group, MSS group, and fluoxetine group was lower than that of the blank group(P < 0.01), but there was no difference between the 3 groups (P > 0.05). In aspect of cell morphological manifestation in hippocampal CA1 region, rats in the adolescent model group had more deeply-staining atrophy neurons, with unclear hyperchromatic nucleus and cytoplasm. The morphological manifestations in modeled rats at adult stage and post-adulthood stage showed progressive aggravation,manifested as a large amount of neurons stained deeply with unclear nucleus and cytoplasm, and a small amount of glial cells proliferated. Compared with the model group at the same stage,the neuronal atrophy and deeply staining decreased in fluoxetine group and MSS group. The average optical density value of 5-HTT expression in the model group was decreased significantly at the adult stage and after adulthood stage(P<0.05 or P<0.01 compared with the blank group). Compared with the model group, the average optical density value of 5-HTT expression in MSS group after adulthood stage, and in the fluoxetine group at the adult stage and after adulthood stage were increased (P<0.05 or P<0.01). Conclusion Rats suffering CUMS in adolescence presents depressive behavior, and post-adult stimulation can aggravates depression. 5-HTT expression in hippocampus may be an important pathway for MSS to achieve the therapeutic efficacy.